Posts Tagged ‘Kg’
Grade 11 Physics - Heat?
September 25th, 2009 Posted by: admin
A worker in a meat packing factory pushes an aluminum crate with a mass of 10 kg across a block of ice. The crate travels a distance of 1.5 m and comes to a stop. The coefficient of friction between the aluminum and the ice is 0.3. If the aluminum increases in temperature by 0.003′C, how much ice melted as a result of friction? (Assume the ice was already at 0′C)
By: lala<3
1 CommentBy: lala<3
heat and phase change physics problem?
August 5th, 2009 Posted by: admin
a 10-kg block of ice has a temperature of -10 degrees C. The pressure is 1 atm. The block absorbs 4.11×10^6 J of heat. What is the final temperature of the liquid water.
No CommentsYou dont have to give me the answer, just a starting point..thanks
By: Kel
Physics- How far from initial position do you meet?
July 10th, 2009 Posted by: admin
You and a friend are on ice skates on an ice rink 20 m apart but held together by a rope. You pull your friend towards you with a force of 25 N. If you have a mass of 60 kg and your friend has a mass of 50 kg, how far from your initial position do you meet?
By: Macdaddy M
No CommentsBy: Macdaddy M
Help me with this chemisty question please??
July 10th, 2009 Posted by: admin
The latent heat of fusion of water is 335,000 J/kg, and the specific heat capacity of ice is 2,000 J/(kg x C). If I introduce 2,000 J of heat to a melting block of ice with mass 1kg at 0C, the final temperature is equal to which of the following?
No Commentsa. 0C
b. 2C
c. 40C
d. 2,000C
By: Nathan W
Help! How do I sove this simple physic’s force problem?
June 26th, 2009 Posted by: admin
A man , with a mass of 65.0 kg is standing by the boards at the side of an ice-skating rink. He pushes off the boards with a force of 9.0 N. What is his resulting acceleration?
4 CommentsIf you could show me your work that woudl be great 
By: Katie L
Physics Problem help pleasee?
June 15th, 2009 Posted by: admin
Two skaters, one with mass 75 kg and the other with mass 45 kg, stand on an ice rink holding a pole of length 6 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 45 kg skater move?
By: Scotty
No CommentsBy: Scotty
Help me with this physics question?
May 22nd, 2009 Posted by: admin
A 25 kg block is sliding across an ice pond with basically no friction. It has a velocity of 11m/s.
No CommentsSoon, it reaches the end of the pond and slides across the ground, which has significant friction (uk = 0.38).
How much time does it take for the block to stop once it leaves the pond?
By: Timemaster
wo skaters, one with mass 77.0 kg and the other with mass 52.0 kg, stand on an ice rink holding a pole with a?
May 15th, 2009 Posted by: admin
length of 7.64 m and a negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far will the 52.0 kg skater move?
By: Mike N
1 CommentBy: Mike N
Two ice skaters - this should be easy?
May 10th, 2009 Posted by: admin
Two ice skaters, M1 (mass 65.0 kg) and M2 (mass 45.0 kg), are practicing. M1 is at rest and is struck by M2, who is moving at 13.0m/s before the collision. After the collision, M2 has a velocity of magnitude 8.00m/s at an angle of 52.1 from the initial direction. Both skaters move on the frictionless, horizontal surface of the rink. What is the magnitude and direction of M1? I don’t know why I can’t figure this out. I know the answer isn’t 3.46 and I don’t think KE is conserved.
By: boredandsavagedork
3 CommentsBy: boredandsavagedork
Physics forces help?
April 16th, 2009 Posted by: admin
1. Suppose an empty grocery cart rolls downhill in a parking lot. The cart undergoes a constant increase in speed of 1.0 m/s over a 5.0 s interval. If the downhill force acting on the cart is 18.0 N and the uphill force due to friction is 15.0 N, what is the cart’s mass?
No CommentsBlocks of ice are slid down a metal chute with an incline of 12.0 degrees above the horizontal. The blocks undergo a constant acceleration of 1.22 m/s2. What is the coefficient of kinetic friction between the ice and the chute?
3. A force of 1760 N is required to start moving a bundle of wooden planks up a ramp. If the ramps incline is 17 degrees and the mass of the planks is 266 kg, what is the coefficient of static friction between the planks and the ramp?
By: shahut123